IX. Southeast, Gulf, and Mid-Alantic USA

Increasing population – especially in coastal areas; water quality/nonpoint-source pollution problems, stress on aquatic ecosystems:

  • Heavily populated coastal floodplains at risk to flooding from extreme precipitation events, hurricanes
  • Possible lower base flows, larger peak flows, longer droughts
  • Possible precipitation increase – possible increases or decreases in runoff/river discharge; increased flow variability
  • Major expansion of northern Gulf of Mexico hypoxic zone possible – other impacts on coastal systems related to changes in precipitation/non-point pollutant loading
  • Changes in estuary systems and wetland extent, biotic processes, species distribution

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